Audibility Signs
SOE UE UL ttt att babi ahaa etal ie elie ie iia _ New readers have inquired the meaning of the "R" signs used in the log each week. The British "R" system of indicating audibility is used by .all amateurs at the present time. The meaning .of the various "R" signals are as follows:-Ri-Faint signals, just audible. R2-Weak signals, barely readable. R3-Weak signals, but readable. R4-Fair signals,. easily readable. R5-Moderately strong signals. R6-Strong. signals. Ri-Good strong signals, readable through much interference. Rs-Very strong signals, audible several feet from the ’phones. R9-Loud speaker strength, AACS SMT
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https://paperspast.natlib.govt.nz/periodicals/RADREC19300822.2.24
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Radio Record, Volume IV, Issue 6, 22 August 1930, Page 8
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97Audibility Signs Radio Record, Volume IV, Issue 6, 22 August 1930, Page 8
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